Product Overview
The YDM403D integrates precise measurement, data communication, and robust display capabilities in one device. It measures essential electrical parameters in three-phase AC systems—voltage, current, active/reactive/apparent power, energy (kWh), power factor, frequency, etc.
This meter is built for modern energy systems and fits into EV charging stations, energy management platforms, industrial panels, and IoT infrastructures.
| Product Name | YADA YDM403D AC Energy Meter | |||
| Meter Type | 3 Phase Energy Meter | |||
| Model No. | YDM403D | |||
| Brand Name | YADA | |||
| Display Type | LCD Display | |||
| Measuring Energy Range | 0-99999.99kWh | |||
| Phase | Three Phase | |||
| Accuracy Class | Class A/B | |||
| Operating Temperature | -25℃~ 55℃ | |||
| Communication | RS-485 (dual line), isolated communication | |||
| ModBus-RTU and DL/T645-2007 Protocol | ||||
| Installation | 35mm DIN rail | |||
| Input current | 0.25-5(80)A | |||
| Input Voltage | 3×230V/400 V | |||
| Nominal Frequency | 50Hz /60Hz | |||
| Pulse constant | 400imp/kWh | |||
| Certificate | MID, CE Certificationl (EN62052-11; EN50470-3) | |||
| Warranty | 2 Years | |||
| Dimensions & Weight | 72.0mm*100mm*65.0mm, 0.338kg | |||
| Appication | AC EV Charging Station | |||
Key Features & Benefits
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High Accuracy & Reliability — Class 0.5 / 1.0 ensures dependable energy measurement for auditing and billing-level systems
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Wide Energy Display Range — Up to 999,999.99 kWh supports large-scale energy monitoring
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Dual-Line RS-485 Communication — Supports Modbus RTU and DL/T645, isolated channels for safe connectivity
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Flexible Current Inputs — 0.25–5(80)A input range allows compatibility with CTs and broader measurement scope
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LCD Display with Backlight — Clear visualization of parameters and status even in low light
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DIN-Rail Installation — Standard 35 mm mounting simplifies panel integration
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Compact & Durable Design — Robust casing, reliable in industrial environments
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Wide Operating Range — Designed to maintain performance from –25 °C to +55 °C
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Industry Certifications — MID, CE, EN / IEC standard compliance enhances credibility in export markets
Main Function
Wiring
Dimension & Installation
MID Certification
Applications
The YDM403D is ideal for:
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EV / electric vehicle charging stations (monitoring station power consumption)
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Industrial energy management systems
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Smart grid and IoT energy monitoring
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Panels and distribution boards in factories / commercial buildings
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Sub-metering in large facilities
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Renewable energy AB / BESS integration (for AC-side monitoring)
Why Choose YADA YDM403D?
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Modern, Export-ready Certifications — With MID and CE compliance, ready for EU and international markets
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Dual Communication Protocols — Covers common field protocols for interoperability
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Scalable & Flexible Input Range — Works with CTs for high current scenarios
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Reliable Display & User Interface — LCD with backlight enhances usability in real field environments
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Compact Mounting & Easy Deployment — DIN-rail form factor fits standard electrical cabinets
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Proven Manufacturer — YADA’s reputation and export experience strengthen trust
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2-Year Warranty & Support — Backed by service assurances for B2B clients
FAQ
Q: What current range is supported?
A: The meter supports 0.25 – 5(80) A input (i.e. with CT) as per specification.
Q: What communication protocols does it support?
A: It supports Modbus RTU and DL/T645-2007 over dual isolated RS-485 lines.
Q: What certifications does this model have?
A: It holds MID and CE certifications, complying with EN62052-11 and EN50470-3 standards.
Q: What is the operating temperature range?
A: –25 °C to +55 °C per seller listing.
Q: How is it mounted?
A: It is designed for 35 mm DIN-rail mounting.
Request An AC Energy Meter Quote
Send the phase configuration, maximum load current, required accuracy class, communication protocol and whether the reading is used for billing. YADA’s engineering team confirms the model.